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RECONSTRUCTION PLAN ON THE SHINKANSEN TRACK

In 1975 after being subjected to 250 million tons of traffic at speeds to 200 km/h, the decision was made to rehabilitate the track of the original New Tokaido Line between Tokyo and Osaka. The growing incidence of defects in rails and welds, degradation of ballast and absence of proper maintenance bases came in for attention. The scheduling and forces necessary for various phases of these programs are described. The problems which have been encountered to date and possible solutions are discussed.